Revesz syndrome is a rare severe phenotypic variant of dyskeratosis congenita (DC; see this term) with an onset in early childhood, characterized by features of DC (e.g. skin hyper/hypopigmentation, nail dystrophy, oral leukoplakia, high risk of bone marrow failure (BMF) and cancer, developmental delay sparse and fine hair) in conjunction with bilateral exudative retinopathy, and intracranial calcifications. (Orphanet Rare Disease Ontology, Orphanet_3088)